1. College of Agriculture, Anhui Agricultural University, Hefei, Anhui Province, P.R. China
2. Seed Science Center, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
3. Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
4. College of Agricultural Science and Engineering, Hohai University, Nanjing, China